Electric switch.



W. E DOW. ELECTRIC SWITCH.

APPLICATION FILED AUG. 6, 1909.

Patented Aug. 8, 1911.

r Wt/DVTUH H5; i MLLABQEUUW with the accmnpenying drawi'm.l'1(3&l3l01l,'llli% letters on the rlitions which vary seem-cling tothe peculie be locked securely sgeinsl; 'seciilei automobile engine.

emme Amalie-alien filed 6 To all whom ii viz-a3; coi'wsmi: I

Be it knewn that I,- l l IIILARD Dew, a citizen of the Unii'ed Slatesand rep dent of Braint-ree, in the county of l'lm'follq ma State ofMassachusetts, have invented an Improvement in Electric Switches, ofwhich the following desei'ipiien, in eennecl mi is a speei- .mgs reprewsenting like parts.

This invention relates is elecizric-switelies and. particularly to aswitch for the circuits of an ignition system. In devices of this 5011;it is clesirable to provide for COI1IlfiC- lion anal operation uncler a'variety of con izu'ities 01 systems in which they are to he used. is

The ignitien'of e1 esi've gaselene e11 has cleveloved to 1901x113 WllGlevmcliiiens necessitate a correspondf of requirements and the :lurnl. aswitch capable i use m such cl rent efys terns invelves a problem ofcensiilerehle difficulty. It is further desirable in many uses, such asin ruiltomebile or pewer kiwi, to have a switch capable of being.v'eselil l and positively Worked and so srmnge L ei'z-ltion after thesysteni has been ini Lew ally put. out 0 f opemtion. This pzu'iicw lm'ly(lesimble in automobile use wheve a caiis often left unsflemlell OllllTo the end, therefore, (if prov V ple and efiective swiich iaivnlviiigthe paints shove enumerated as (fiESlifilllEWlIlu havingvai'ious otherfeatures 21ml hill-'21 ."f-ages structure and use, I have devised mypres- 1 11 ihe speeiliestinn which the drawings which form a elescrihetland shevrn my invehtiem Well illusil'f ciples i velved'therein. This isa s'wiich for the ignition hlecl, Fig; 2 a rear View of iihe hex withparts remevecl, Fig. 3 a census vertical? q "i a a sec-tine, and l plug.v

l a swii'eh box having a recess 2 in ifis rear face fertile pro'l'eefivcillounting and hens e2? ille pal-is. "ell hachecl ie the ve th s latereference to v 11' plate bet-01m. 0:: 1e recess Ab and mclisllykiispesedWit are three eeniacis 5, 6 and 7 which are l 'l iii) "1' h a nut rundown on 01th:: plate 41 is a threadswiieh arm 10 D 01f the switch arm atlts ogects ilurou h the botend Of the 5133111 10 wiih lhe holes 1 slzulanal also riveted 15 of the triple group Jere with a hole which box 1and is provided ling. 2]. is a plug havporirion aclaptecl to engage dlfiof said bushing of the hole 5 El llih an enrl. 22 which, when isscrewed, in will so prevent J alrom seating in the hole 15 as movementthe arm 10 p0s- A ving enmlghof a recess to me switch center.

in remiss-ting: in T switch two general sysr 3S enl v' need. hecensilereli. 'With a magneie ignition system, requiring an epen circuitsw ets "the magnets can be Wired to the ms 0'- anal the greimd wire 01the starting hm cries and coil eennecced to the post in 'this systemwith the switch arm 10 center the magneto is grounded by the centset ofthe bliuife 13 and is renderecl inholes for the at the (lash or other.

Ell' plste' l ancl providi, Wniehis slotteci i0 permit its lateralmevezneill; 1n either cllrectlon lmm J shape split to ferm- Each ofthese blades heroin threegh which pioj eats i? en a leixf spring 18WhlCll' I i 4% s detail of the unlocking CIT.

Q the pl operative by the fact of its being so grounded. /Vhen thehandle is thrownto bring the bleile 1.3 over into the Contact 7 and theblade 1:2- over the contact- 6 the engine can he started on the loattries of the circuit from 7 While the magneto circuit connected at iscovered by the point 12 and is, there tore, still grounded andinoperative. To stop the battery ignition the arm 10 is returned tocenter cutting out the battery circuit and. grounding the closed circuitmagneto'tlirough the blade 13. To shift onto the magneto, still leavingout the batteries, the blade 12 is brought over in which position thecircuit of the magneto is opened/at 6 and mode operative for the runningignition, I

With magneto systems requiring a, closed circuit to operate, the magnetoconnection is rustle st end the battery at 7' as before.

l fhen the switch is at center it is of course out oi contact andinoperative. "So start on batteries it thrown so thattlie blade 13covers the oontect 7 then reversed to run on "'iegiieto-hy bringing theblade 12' over cc r not 5. It will be seen mormver that it. possible toconnect the two systems as above inilicstcd t the same time and slsofthebattery and still be able in the three posit1o-..mg of the sw tch arm toselect any s so or the three arid cut out-the others or at out all threefrom operation. lo'eech of those positions it will he seen the catch 7finds a recess affording engagement sulfiient to locate the armproperly. At center or (lead position this location is made permanent byremoving; the plug )1. The removal of the plug 21 in either system silie switch will; r can only operated after has been inserted.

Various modifimtirms in form and errungemeiit of ports and connectionsclovioosly be n'mrle within the limits of the l, zippc deal chums,Without departing from the spirit of my invention.

V /hst I therefore claim and desire to sccore by Letters Patent is:

'1. In a switch, a movable arm, a; support having; a recess in the pathof said arm, a catch on snicl arm for engaging seicl recess and eremovable plug for normally partially closing said recess to permit themovement of said arm While leaving a shallow recess sotiicicnt forindicating 2L position of the arm;

2. lo a switch a movable arm a support having a recess in the patlrofsaid arm, means on said arm for engaging said recess and a removablemeans for normally partially closing soicl recess to permit the movementof said arm While leaving a, shallow rcccss sullicient for indicating aposition of the arm.

In a switch, e movable arm, o support having an opening therethrough andforming a recess in the path of said arm, means on said arm for engagingsaid recess and a removable means for normally partially closing saidopening but leaving a shallow recess to indicate the position but permitthe yielding disengagement of said arm.

4:- In a switch, a having an opening therethrough, an arm movablymounted on the inside of said box, the under eml of said opening forminga recess in the path of said arm, s yielding catch on said arm forengaging said recess and a removable plug insertible through saidopening to partially close said recess leaving a shallow recess toindicate the position but permit the yielding cliseng agement of saidcetch on said arm.

5. ll switch, comprisin a, movable contact maker carrying 21 yields lepin, a support therefor, a recess in said support. in a positioiito beentered hy said. pin to fixcxlly 'loclr said contact maker, and a plugcooperative with said recess to decrease the depth of said recess theparts losing so constructed that saiol in may then be disengaged therefrom by .atera'l impulse imparted to said contact maker.

6. In ai'switch of the character herein doscribecl, the combination of asupporting base, e segmental series of stationery con tact pointsarranged on said base, a movable switch lever pivoted on said base, andmeans for locking seizl lever in a dormant position the some comprisinga bolt sliding in said base and engaging an orifice in said lever, meansfor yiel ingly forcing said bolt to its engagement, and means on shidbase for guidiog a plug longitudinally to move said engaging means outof engagement with the switch lever. v

In testimony whereof, I have signed my name/to this specification, 1nthe presence of two subscribing witnesses.

l v WILLARD-E. 110W. Witnesses:

Amos H. Dow, CAsLorL i NIX.

